Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6476a6751bf1a4b…

MALICIOUS

PDF

76.2 KB Created: 2021-03-19 20:12:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9972aac3e3a433583f89f06e4f6c4a42 SHA-1: 11d6100263db00478f6918f9c9a674b5daa7660e SHA-256: d6476a6751bf1a4b3d9608f25e9a41beba7585280cf4f3632f7be4724f86beea
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/aws?utm_term=nys+dmv+drivers+license+renewal+application PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499023/normal_602c9510d5de9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409123/normal_5ff6618ad84f1.pdfIn PDF document text
    • http://ru-order-687646765445.art/maytag_bravos_xl_dryer_door_reversal_instructionswp792.pdfIn PDF document text
    • https://cdn.sqhk.co/josozudibud/hcfhaQA/87817547140.pdfIn PDF document text
    • http://arthromedro.xyz/bamisafop5fq9.pdfIn PDF document text
    • https://cdn.sqhk.co/jasolizilaf/ig4idhh/wrc_fia_world_rally_championship_ps1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fd3dc0ebb260.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/axqihXo/house_plants_startup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384310/normal_5ffbc0d28fba8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vezoxonu.epizy.com/nescafe_dolce_gusto_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/abu_dhabi_police_logo_guidelines.pdfIn PDF document text
    • http://misebupafavo.rf.gd/6243201940.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/gofoviz.pdfIn PDF document text
    • http://wudujijejek.rf.gd/xewowusafefa.pdfIn PDF document text
    • http://labafam.rf.gd/what_would_cause_a_jeep_cherokee_to_not_start.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/81911361161.pdfIn PDF document text
    • http://bibarixe.epizy.com/3-_4_equations_of_lines_worksheet_answers.pdfIn PDF document text
    • http://befojarariwowab.epizy.com/bruce_lee_songs_sen_songs.pdfIn PDF document text
    • http://tuzufuwav.rf.gd/subiputegudukob.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0A 5440 bytes
SHA-256: 8df7a0e7fb9066639194d36932ee7b941cf32d8d1b0bdc6c6657466f5c0ebc31
font_01_sfnt_off0000fd98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD98 10988 bytes
SHA-256: d6d6e1295aa1c2cfef9e4d015259065c261afd8c02362bed73a4d34c45858b0b

Open this report in the interactive analyzer, or submit your own file for analysis.